	* {
	  margin: 0;
	  padding: 0;
	}

	html,
	body {
	  width: 100%;
	  height: 100%;
	}

	body {
	  background-color: #F2F6FC;
	}

	.box {
	  width: 1000px;
	  height: 600px;
	  position: fixed;
	  top: 50%;
	  left: 50%;
	  transform: translate(-50%, -50%);
	  perspective: 1000px;
	  perspective-origin: center center 150px;
	  border: 2px solid #DCDFE6;
	  border-radius: 8px;
	  background: #EBEEF5;
	}

	.box ul {
	  width: 300px;
	  height: 300px;
	  left: 0;
	  top: 120px;
	  right: 0;
	  bottom: 0;
	  margin: auto;
	  position: relative;
	  transform-style: preserve-3d;
	  animation: move 6s infinite linear;
	  cursor: pointer;
	}

	.box ul li {
	  list-style: none;
	  width: 300px;
	  height: 300px;
	  position: absolute;
	  font-size: 2em;
	  text-align: center;
	  line-height: 300px;
	}

	.box ul li:nth-child(1) {
	  background-color: rgba(255, 0, 0, .3);
	  /* background-image: url(img/pic-1.jpg); */
	  background-size: 300px;
	  transform: translateZ(150px);
	}

	.box ul li:nth-child(2) {
	  background-color: rgba(255, 255, 0, .3);
	  /* background-image: url(img/pic-2.jpg); */
	  background-size: 300px;
	  transform: translateZ(-150px) rotateY(180deg);
	}

	.box ul li:nth-child(3) {
	  background-color: rgba(255, 0, 255, .3);
	  /* background-image: url(img/pic-3.jpg); */
	  background-size: 300px;
	  transform: translateX(-150px) rotateY(-90deg);
	}

	.box ul li:nth-child(4) {
	  background-color: rgba(0, 255, 0, .3);
	  /* background-image: url(img/pic-4.jpg); */
	  background-size: 300px;
	  transform: translateX(150px) rotateY(90deg);
	}

	.box ul li:nth-child(5) {
	  background-color: rgba(0, 255, 255, .3);
	  /* background-image: url(img/pic-5.jpg); */
	  background-size: 300px;
	  transform: translateY(-150px) rotateX(-90deg);
	}

	.box ul li:nth-child(6) {
	  background-color: rgba(0, 0, 255, .3);
	  /* background-image: url(img/pic-6.jpg); */
	  background-size: 300px;
	  transform: translateY(150px) rotateX(90deg);
	}

	@keyframes move {
	  from {
	    transform: rotateX(0deg) rotateY(0deg);
	  }

	  to {
	    transform: rotateX(360deg) rotateY(360deg);
	  }
	}